Loose-leaf binder.



L. F. sGHERZNGBR.

LOOSE LEAF BINDER.

'APPLICATION FILED JULY 8, 1909.

9749831 o Patented Nov. 8, 1910.

MM .914 20 52121 -gl z i@ i @www ..20 in which' the hinge leaf remain inopen or ing'is aspecificatioii.

` T his invention'` relates to improvements I To all whom 'it mayconcern:

Beit known that I, LAWRENCE F. 'SoHER-' ZINGER, a citizen ofthe UnitedStates, resid' ing at 119 Cullom avnue,-0hicago, county of Cook, andState of Illinois,j'have invented' [hinge plates 11 byfmeans of knuckles12 vcertain V. nevv and "useful Improvements in 'Loose-Leaf Bintiers,Vof whichfthe `i'ollowknuckles upon the supporting plate. The

`LAWRENGE F. SHERZINGER, OF CHICAGO, ILLINOIS,IASSIGNOR TO THE TENGWALL-ooMPANm'oEoHICAGo, rLLrNqis, A CORPORATION or MAINE.

in loose leaf binders'and refers more part'icularlyjto-fimproved lockingmechanism 'v anism oivvhich 'may be used ondiflerent for bindersor filesof the'prong type.x Among the salient'objects .of the inven` A tion areto provide a construction in which@ the. hinge leafs carrying the prongr'iiembeis are-forced open by simple cam mechanism; and arepositivelyflcked in either open or`^v closed position; to .provide aconstruction lin 'which the-"operating mechanism is substantiallyconcealedvvit inthe binder, and

=closed position Without manual control, hereby permitting lthe use ofboth 'hands for inserting the-leaves upon the binder.; to provide aconstruction the locking mechstyles 'of binders; Vt'o-provide 4anextremely simple and reliable construction Whichcan be manufactured at averylow cost; and in -general to provide 'an improvedconstruction of thecharacter'referred to.

The invention consists inthe mattersliere-A after` described and moreparticularly `,pointed.'fout in the appended claims.

'In the drawings-fFigure'lis a perspecf tivevie'W of a temporary binderofthe prong 1 i' v type equipped with. my invent-ion, the covers eingopen a'ndthe sheet-holding prongs closed.. Fig. 42 is the top plan.vievv of the binder proper,V` the cover plate beingjhow-. lever,removed, in order to bring out certain details of construction. Fig. 3is a 'longitudinal vertical sectional View of the binder. Fig. 4 is atransverse sectional vievv .showing the prongs closed and Fig; 5 is aview showing the prongs open.

: the covers 'of thebinder having -anintegral' Referring to thedrawings, 1,'.1Ldesignates back. Lyin-ginside ofthe back isa connectingstrip 4, the ends of `which are suitably securedto" the coversasshoii'vn at. 5.

. f lThis strip 4 is fastenedv between the curved su ortin l,plate 6 anda clamping plate-7' pp g The longitudinal by' means of rivets 8.

Specification of Letterslatent.

' Application filed July 8, 190.9. Serial No. 500,466.

fastened in' the usual-manner. plates 11'A are-*normally forcedinto-aline- `ment, thus closing the prongs, by means of the meetingedges of the hinge `plates 11.

Loose-LEAF BINDER.

Patented Nov. 8,1910.

edges of the curved plate-6 are provided withv spaced apart hinge stripsor4 knuckles 9, 9 clamped around the ypintles 10, 10. To

these' pintles` are .pivotally connected the which register With thealternately disposed hingepla'tes orfstrips are provided With the usualprongsl'g lto which the leaves are coiled springs 14 mounted upon the`pintles and provided With-fingers 15 'Which engage the. upper. face ofthe` corresponding hinge plates.

Describing now the locking mechanism for holding the prongs in eitheropen or closed position, Within, the upper face of the curved supportingplate 6` is mounted a sliding'bar or arm 16,' the ends of which areprovided with closedslots 17 riding in suitable conining studs or. guidescrews 18. The outer end of the arm is provided with an upstandinghandle 19 `whereby the-arm may be reoiprocatedacross'the face of thecurved support-ingplate .As an important feature of construction the arm16 is provided with ivedgelshaped cams 20 normally projecting throughsuitable apertures 21 formed'by cutting awfiiy n order'to positivelylock or clamp the hinge plates in cl-osed position the cams are eachprovided With a locking lip or tongue 22 vvhi'ch project over themeeting edges of the hinge' plates'vvhen the latter are in closedposition as 'shown at 23. The hinge plates are limited in their upward.movement by means of a downwardly curved closure plate Q41, the edgesof. which are crimped over the hinge knuckles as shown at 25. This uppermember 24 is slotted as shown at 26 at points .opposite`the prongs 13 inorder that the lat- The` hinge lThe operation of the device is apparentI `from the above description. When 1t is desired to open the prongs toinsert the leaves,

the arm 16 is drawn back until the cams pass out of theslots' 21`whereupon the hinge plates will be obviously lifted and the prongs vswung apart. Tl1ey.will remain in this position `until the'arm 1G isagain forced back to its original position whereupon the cam willreenter the slots and the hinge plates return to normal through theaction of the springs. At the same time thelocking lips will ride `upover the meeting edges of the plates and positively lock the latter inclosed position. j

yThe invention is not limited to the details v of construct-ion shownexcept as set forth in the appended claims. I claim as my lnventionz' ym 1. Ina binder, the combination with a,

supporting plate, of pronged' carryingmembers hinged thereto'an'dprovided with a plurality of opposed prongs, 'an actuating arm slidablymounted in said supporting-} )late, and cam blocks carried by saidarmand projectingthrough slots-formed in `the meeting edges 'of said prongcarrying members when the latter are in closed position.

2. Inv a binder, the combination with a supporting frame member, ofprong plates hinged thereto and provided with a plu- `rality of -opposedprongs, an actuating arm slidably mounted in said frame member, and

cam blocks carried by said arm and moving te: v 974,831I

supporting frame member, of leaf carrying .plates hinged thereto, anactuating arm slidablymount-edbeneath said plates anda cam block carriedby said arm and projecting through an aperture formed in the meetingedges of saidplates when the latter are in closed position.

5. In a binder, the combination with a Asupporting plate, of prongcarrying mem bers hinged thereto and'orovicled'with o3- e l, A p osedprongs,l an actuating armslidably mounted beneath said plates, a calnblock carried thereby, a conningplate, and a flexible cover attachingmember secured be-V tween said confining and supporting plates.

LMVRENCE` 1r. SCHERZINGER. Vilitnesses':U I* Y HOYT N. MCCLAIN, JOHNJ.Diem..

